Andrew j



ANDREW J. MORSE; OF vBOSTON1 lllASSCI'lUSE'lTS.

Lrifem Pniunt No. 70,456, dated November 5, 1867.

l litige Schwul: nient la in tten rltn's 331mm mit mailing om' tt .itc non.

I TD ALL WHOM IT MAY CONCERN:

I Bo it known that l, ANDREW J. MORSE, of Boston, in the county of Sull'olk, and State of Mix'ssechnsettsf.= have invented nn Improvement in Couplings for Hose, Ste.; and I do hereby-declaro that tho following, token in connection with the drawings which nccompnny and form part of this specification, is a [inscription of my invention snilicient to enable these skilled in the nrt to practise it.

lIn, applying metal couplings to leather hose, the common practice is to construct each part of the couplingscrew -with n tail or tube-piece, on the outer cylindrie surface of which e screw-thread is cut, while over this tnil-picce isn, cylindricring of corresponding length. This ring has n smooth inner surface, and in attaching the hose to the coupling thoring-is lire-t slid over tho end o f the hose, ond thetnil-pieec ie thon entered into the hose and turned, the threads of the screw working into the inner surface of tho leather until the toil-piece is brought home, or until th couplinglongonbuts against the end of the ring. .The ring contines the leather, or tho enter surface thereof, n'hile the inner surface is compressed into the threads of the screw.

This method of attaching the hose, however, is found in practice to be defective or ineiiicion't under the high 'pressure to which hydraulicbose is often subjected, ond the couplings src blown oli', and it is found neeossary to rivet each eonpling-ring to tho hose to keep them together, three atl sometimes six rivets having to be y employed upon enel! ring for this purpose.

The object of my improvement is not only to save the labor und expense consequent upon the employment of these rivets, but termite o stronger :rnd more perfect connection o'i' tho hose to the conplinhpeces then can be obtained by any of the menos now n'oommon use for e'ectng noch attachment. :i v

In my construction I eut e screw-thread upon the outer surface of each toil-piece, and n corresponding 'thread upon the innervend of the encompassing-ring, these connecting the ring and tnibpieee together; ofnd I also cut en inner or female screw-thread on tho interior snrfoce of tho ring, at the enter and. thereof', this screw being preferably a. left-bonded screw, and being intended to rvork over the. enter surface of the hose.

In attaching thc hose I lil-st screw the ring, by means of the inst-mentioned scremtbrenil, over the cnil of v the hose, or'npon the outer surface thereof, until the c treme end ot the hose shuts against o slionlder'ncar tlm inner end ofthe ring. Tho inner surface of the ring between the hose-screw and the eonnecting-screw is recessed or enlarged, and when the ring so applied to the ond of the lzosois screwed upon the toil-piece, the part of the hose ndjecentto this recess is expanded into the seme, and by reason of anch expansion, ond of the hold of the ring-screw upon the leather, no pressure which the hose itselll will endure will be eepnblo ot bursting the hose nn'ay from the coupling. It is in this oonstruction tlzntymy invention primarily consiste.

The drawing represents e. central section et'l the two ports oto-motel hose-coupling embodying auchinvention.

The two parts or halves of the coupling nrc shown'es screwed together, and to one-port the hose is shown as attached, bile ntthe other pert the hose is shown ns applied to the ring, the ring ond hose being trendy forl connection Witlntlie teil-piece.

a and denote the two ports oi the coupling, connected by male and female serons in the ordinary manner.

c c are the two screpv tail-pieces or tubes, one projecting directly from the coupling-piece @and the' other held' to the opposite coupling-piece by flanges or lips ri, as is woll understood. On the ester lsurface eeaolx tailpicce lont uw' crew-thread, c, preferably making said screw straight at theinner epd thorooi', :rnd tapering towards tire outerl'endfas seen ntf, while at or near the end of the tail-piece its enter-surfacejs mode smooth and streicht, @sise `n at g. z it denote the encompassing or hose-confining rings. Enel: has en its innersurfuce, :tt the inner cri tllereoi', o female screw-thread, 1', fitting upon the screws ont on the 'tail-piece, while nt its outer end ithas o .other female screw-thread, is, preferably e left-handed, thread, the diameter. of this serein 7": 0f that @YH-Tf or tube h at which it is eut, being greater than 4the diameter et the opposite end of the tube, as s \en ir,y drawing. Between these screws the interior ot' the ring is enlarged, as seen nt I, this enlargement or rcce'ssjheing preferably mode tapering or conical.

The ports being s ns follows: The rior:f 71, bylinenns .of its screw 7:, is lirst screwed over the outer snri'o'ee of the hose until the end of the hose strikes tlrrshouldor m at the end of the connecting-screw z', os soon at B, or the ring moy be nippod o-fotlmed, tho connection or attachment of the hose to the respectivo parts is accomplished '10,456' i 2 l y ovor the and-cf the hose, sind the hose bo then expanded or driven outwardly against the screw-thread by e suitable The ring and hose having been ths connected, oa scen at B; the plug is removed, ond the tniipiece c in thon Bcrencd into the ring oy menno of its scrow e working into thc screw 1' of tho. ring, until thc inner end of tho ring "abats, against the conpling-flnnge d, os seen at A Tho tapering pitrt of tho screw z' in this operation expanda tliepart of the leather adjacent to tho rocoso l, ontwadly against thc conical or recessing surface L, while -the straight part g compresses tho lenther firmly into thc sci'cw-thrcud k; this collocation making the joint perfectly tight, ond securing the coupling against oil possibility of being blown o.

In the old method of applying the tail-piece Within the tube, the friction between tho leather and screw is o'f'ton no tout that tho hose turns roundinvthoring, nnLth .ncrewdoen not turn in tho leather, both turning turn in the ring While screwing in the toil-piece, screws the ring more tightly or further upon tllc liosc instead. of away thercfrqm,nnd of oom-so mnkesthe connection still moro secure.

`umm, in combination with the tail-piece of the coupling, hnving n screw-thread upon its outer surface,

. the encouipu'aoing-ring having two screw-threads, one for sox-owing upon the outer surface of the hose, and (ho other for connecting th`o ring to the tail-piece, substantially ns set forth. i

I nluo'clnm the recess lumi tapering screw or snrfaccf, in combination with thc encompassing-ring nml tail-picco, ubstantiolly os set forth. i i

"I also claim the screw-threads; nt the respectivo onda of Itho onconpaasing-ring lz, mode to run in op'posito directions, substantially na described,

' ANDREW J'. MORSE.y

Witnesses@ 4 om Gown,

L. II. LA 

